Commitments and Contingencies - (Details Textual)		1 Months Ended	12 Months Ended
	Apr. 13, 2015 USD ($)	Jan. 31, 2019	Dec. 31, 2018 USD ($) ft²	Dec. 31, 2017 USD ($)	Mar. 06, 2019 USD ($)	Jan. 01, 2018 USD ($)
Other Commitments [Line Items]
Defined contribution plan, employer matching contribution, percent of match (percent)			50.00%
Line of credit				$ 500,550
Accounts Receivable, Gross			$ 1,907,860	625,687
Accounts receivable, net			7,071,815	3,647,025		$ 3,739,430
Capital Lease Obligations			$ 0
Length of rental sublease agreement (lease term)			sixty-five month
Lessee, operating sublease, option to extend (lease term)			one additional year until April 30, 2020
Size of leased building (square feet) | ft²			15,500
Defined contribution plan, employer matching contribution, percent of employees' gross pay			8.00%
Defined contribution plan, employer matching contribution, annual vesting percentage (percentage)			20.00%
Defined contribution plan, employer matching contribution, number of years of service required for participant vesting (years)			2 years
Defined contribution plan, employer discretionary contribution amount			$ 219,563	201,003
Loss Contingency, Undiscounted Amount of Insurance-related Assessment Liability			500,000
Secured Line of Credit Facility [Member] | Credit Agreement [Member]
Other Commitments [Line Items]
Payments of Financing Costs	$ 8,400
Eligible securitization percentage of accounts receivable (percentage)	80.00%
Line of credit facility, maximum borrowing capacity	$ 5,000,000
Debt instrument, annual facility fee	$ 20,000
Line of credit facility, commitment fee percentage (percentage)	0.40%
Line of credit facility, annual due diligence fee	$ 1,000
Debt instrument, description of variable rate basis	prime plus 2% per annum
Debt instrument, description of default rate of interest	prime plus 7%
Line of credit			1,526,288	500,550
Accounts receivable, net			7,071,815	3,647,025
Line of credit facility, current borrowing capacity			$ 3,473,712
Debt issuance cost amortization period (years)			1 year
Amortization of debt issuance costs			$ 25,215	21,000
Debt issuance costs, net			$ 11,214
Capitalized loan costs amortization period (month)	12 months		4 months
Minimum [Member]
Other Commitments [Line Items]
Payments for Rent			$ 17.50
Maximum [Member]
Other Commitments [Line Items]
Payments for Rent			22.50
General and Administrative Expense [Member]
Other Commitments [Line Items]
Operating Leases, Rent Expense			$ 667,718	$ 579,346
Subsequent Event [Member]
Other Commitments [Line Items]
Length of rental sublease agreement (lease term)		sixty-five month sublease agreement that originally expired in April 2019
Loss Contingency, Estimate of Possible Loss					$ 300,000